Effects of Air Pollution on Precipitation and Living Organisms in Seoul Area 2. Estimation of Relative Air Pollution by the Contents of S, Pb and Cd in the Stem Cortex of Salix pseudo-lasiogyne

서울 地域의 大氣汚染이 降水와 생물에 미치는 영향 - 2. 능수버들 가로수 皮層의 S. Pb 및 Cd 含量에 의한 大氣의 相對 汚染度의 추정

During the autumn of 1985, the stem cortex of Salix pseudo-lasiogyne on the street sides in Seoul city was collected by a cork borer. The contents of S, Pb and Cd in this sample were determined. The ranges of S, Pb and Cd contents in all the samples were 0.98-3.46$\mu$/g, 0.77-1.81$\mu$g/g and 0.12-0.28$\mu$/g, respectively. Areas which slowed the highest level of S, Pb and Cd in the stem cortex were Yongon-dong, Yongdungp o, Ulchiro, Ch ongnyangni, Shinch on and Suyu-dong, Yongdungp o, Ulchiro and Ch ongnyangni, and Yongon-dong, Yongdungp o and Ch ongnyangni, respectively